EP3759347A1 - Pompe à vibrations - Google Patents

Pompe à vibrations

Info

Publication number
EP3759347A1
EP3759347A1 EP19711715.3A EP19711715A EP3759347A1 EP 3759347 A1 EP3759347 A1 EP 3759347A1 EP 19711715 A EP19711715 A EP 19711715A EP 3759347 A1 EP3759347 A1 EP 3759347A1
Authority
EP
European Patent Office
Prior art keywords
ferromagnetic elements
hollow body
pump according
chamber
ferromagnetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19711715.3A
Other languages
German (de)
English (en)
Inventor
Giuseppe Marone
Alessandro Rovera
Paolo Da Pont
Paolo Ravedati
Marco BUZZI
Marco GAUDINO
Piero AMICO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elbi International SpA
Original Assignee
Elbi International SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Elbi International SpA filed Critical Elbi International SpA
Publication of EP3759347A1 publication Critical patent/EP3759347A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/046—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing through the moving part of the motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/02—Piston parameters
    • F04B2201/0201—Position of the piston

Definitions

  • the present invention concerns a vibration pump (hereafter also referred to simply as "pump”) substantially extending along a longitudinal axis x-x. Therefore, the terms “axial”, “longitudinal”, “transversal” and “radial” as used in the following description should be considered to refer to said longitudinal axis x-x.
  • the pump further comprises a solenoid 4 arranged around the hollow body or cylinder 6 and configured for actuating piston or core 2 electromagnetically .
  • ferromagnetic elements 5, 5' are laterally spaced apart and define at least one perimetrical interruption in between.
  • ferromagnetic elements 5, 5' define, between themselves, a pair of such perimetrical interruptions, designated by references G, G'. Due to the above-mentioned features, the transversal distance between ferromagnetic elements 5, 5' and core 2 is considerably reduced. In other words, between core 2 and ferromagnetic elements 5, 5' - which contribute to effectively conducting the magnetic flux generated by solenoid 4 towards core 2 - only cylinder 6 is transversally interposed, without any other interstices or gaps that would cause a substantial dispersion of the magnetic flux.
  • Cylinder 6 and the at least one ferromagnetic element 5, 5' are configured in a manner such that the at least one recess 42 defining the communication duct is absent between the at least one ferromagnetic element 5, 5' and core 2. Therefore, with reference to a transversal or radial direction (e.g. relative to a longitudinal axis x-x of cylinder 6), between the at least one ferromagnetic element 5, 5' and core 2 there is no recess 42.
  • cylinder 6 extends along a longitudinal axis x-x. With reference to a radial direction relative to longitudinal axis x-x (Fig. 7), between ferromagnetic element 5, 5' and core 2 there is only a lateral surface of cylinder 6.
  • Both groups or pairs of ferromagnetic elements 5, 5' are situated in a circumferential position around cylinder 6. Such groups are aligned along axis x-x.
  • the at least one ferromagnetic element 5, 5' may be shaped like an arc of circumference.
  • the pump comprises a plurality of groups of ferromagnetic elements 5 (or 5'), wherein each group comprises more than one pair of ferromagnetic elements 5 (or 5'), wherein cylinder 6 and ferromagnetic elements 5 (or 5') are configured in a manner such that the at least one recess 42 defining the communication duct is absent between them.
  • the peripheral development of the at least one ferromagnetic element 5, 5' around cylinder 6 is delimited by the at least one protrusion 48.
  • protrusion 48 there are two protrusions 48, between which the pairs of ferromagnetic elements 5, 5' are arranged.
  • protrusion 48 is parallel to axis x-x of cylinder 6.
  • protrusion 48 conveniently follows the development of respective recess 42.
  • the two ends of ferromagnetic elements 5 rest on protrusions 48.
  • Sensing means 24 are adapted to sense magnetic field variations caused by the rotation of impeller 20 and of magnet 22 integral therewith.
  • the sensing means may be of the electric, electronic or magnetic type, such as, for example, a magnetic sensor.
  • Impeller 20 is adapted to rotate about an axis of rotation x-x, which is, in particular, coaxial to core 2.
  • Impeller 20 is conveniently supported in rotation by a support 26.
  • Support 26 may be, for example, made of ferromagnetic, in particular metallic, material; as an alternative, support 26 may be made of plastic material.
  • Said support 26 has a pin 28 inserted in a matching recess in impeller 20 to allow rotation thereof.
  • cylinder 6 is made of plastic material.
  • Recesses 42 defining the communication ducts are preferably made during the moulding of cylinder 6, e.g. by injection moulding.
  • Other elements of the pump may also be made of plastic, such as cover 32, housing 40, etc.
  • transversal protrusion 46 the external surface of hollow body 6 has a transversal protrusion 46.
  • Transversal protrusion 46 and protrusions 48 define a plurality of seats 50 in which said ferromagnetic elements 5, 5' are situated, e.g. inserted before being assembled with solenoid 4.
  • transversal protrusion 46 is substantially annular in shape, e.g. like a collar transversally protruding around hollow body 6.
  • Figure 10 illustrates a variant embodiment of the transversal protrusion, designated as 146.
  • core 2 has a substantially circular cross- section. More preferably, the inner cavity of core 2 also has a substantially circular cross-section.
  • This pump also comprises a pair of elements of ferromagnetic material 52, each one of them being situated in hollow body 6 within a longitudinal portion or tract 42a of a respective recess 42.
  • the above mentioned longitudinal portion or tract 42 is arranged transversally between hollow body 6 and the region in which piston 2 is adapted to slide. This makes the magnetic flux that moves piston 2 more effective.
  • a corresponding element of ferromagnetic material associated with the recess.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention porte sur une pompe comprenant : un piston (2) au moins partiellement constitué d'un matériau ferromagnétique ; et un corps creux (6) conçu pour être traversé par un écoulement de fluide et comprenant une chambre de travail (7) dans laquelle le piston (2) peut effectuer un mouvement de va-et-vient de manière guidée. Le piston (2) définit dans la chambre de travail (7) une chambre d'entrée (36) et une chambre de compensation (38) destinée à être traversée par le fluide. La surface intérieure de la chambre de travail (7) présente au moins un évidement (42) définissant au moins un conduit de communication qui établit une communication fluidique entre la chambre d'entrée (36) et la chambre de compensation (38). L'invention concerne également un solénoïde (4) disposé autour du corps creux (6) et conçu pour actionner le piston (2) de manière électromagnétique. Deux éléments ferromagnétiques (5, 5') sont disposés autour du corps creux (6) et positionnés transversalement entre le solénoïde (4) et le corps creux (6). Les éléments ferromagnétiques (5, 5') sont espacés latéralement et définissent au moins une interruption périmétrique (G, G') entre eux. L'évidement (42) est situé dans une interruption périmétrique respective (G, G') et est délimité latéralement par l'interruption périmétrique (G, G').
EP19711715.3A 2018-02-27 2019-02-27 Pompe à vibrations Withdrawn EP3759347A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102018000003064A IT201800003064A1 (it) 2018-02-27 2018-02-27 Pompa a vibrazione con struttura migliorata.
PCT/IB2019/051555 WO2019166954A1 (fr) 2018-02-27 2019-02-27 Pompe à vibrations

Publications (1)

Publication Number Publication Date
EP3759347A1 true EP3759347A1 (fr) 2021-01-06

Family

ID=62223074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19711715.3A Withdrawn EP3759347A1 (fr) 2018-02-27 2019-02-27 Pompe à vibrations

Country Status (3)

Country Link
EP (1) EP3759347A1 (fr)
IT (1) IT201800003064A1 (fr)
WO (1) WO2019166954A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100007790A1 (it) 2021-03-30 2022-09-30 Elbi Int Spa Dispositivo di rilevazione per un flusso di liquido in un apparecchio elettrodomestico.
IT202100007772A1 (it) 2021-03-30 2022-09-30 Elbi Int Spa Sistema di controllo per una pompa, in particolare per un apparecchio elettrodomestico.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8709082D0 (en) * 1987-04-15 1987-05-20 Eaton Sa Monaco Electrical fluid pump
IT249882Y1 (it) * 2000-11-10 2003-06-05 C E M E Engineering S P A Pompa con valvola a doppio effetto
DE602004008596T2 (de) * 2004-06-11 2007-12-27 Olab S.R.L., Torbole Casaglia Schwingankerpumpe
CN103649535A (zh) * 2011-07-01 2014-03-19 伟嘉电业有限公司 包括磁力驱动装置的往复式活塞泵

Also Published As

Publication number Publication date
IT201800003064A1 (it) 2019-08-27
WO2019166954A1 (fr) 2019-09-06

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